SIG Sauer P320 M18 9mm Compact – Optic-Ready Coyote-Finished Duty Pistol
The P320 M18 is the civilian-legal counterpart to the U.S. military’s Modular Handgun System sidearm. This compact 9 mm striker-fired pistol pairs a proven, serialized stainless-steel fire-control unit with a coyote-tan polymer grip module and matching coyote PVD slide. Its 3.9-inch carbon-steel barrel, night-sight system, and direct-mount optic cut make it a versatile choice for duty, defense, or range use.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Condition: Excellent – Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling – Sharp lands and grooves.
Specific Condition Notes: Light surface scratches and finish wear are present on the slide, consistent with holster use.
What’s Included
- SIG SAUER factory hard case
- One 21-round factory steel magazine with coyote polymer basepad and orange follower
- One 17-round factory steel magazine with coyote polymer basepad and orange follower
This M18 carries the distinctive “M18A” serial prefix, matching the format issued to the U.S. Armed Forces. The modular fire-control unit allows caliber or grip-size changes without replacing the serialized component, giving owners long-term adaptability.
The optic-ready slide accepts Leupold DeltaPoint Pro or SIG ROMEO-M17 footprints without adapter plates. A removable rear-sight plate retains tritium night sights, so you stay on target even before mounting an optic.
Forward and rear cocking serrations provide solid purchase for press checks or manipulations, while the coyote PVD finish resists corrosion and blends with military gear. The carbon-steel barrel is nitride treated and DLC coated for longevity.
An ambidextrous manual thumb safety joins an internal striker safety and disconnect safety, giving shooters multiple redundant safeties without compromising the P320’s smooth, consistent trigger pull.